wesley habman



(No Model.) V

. O. W. HARMAN.

WATCH CASE.

Patented Mar. 3, 1885.

UNITED STATES PATENT ()FFIcE.

O. \VESLEY HARMAN, OF NEW YORK, N. Y.

WATCH-GAS E.

SPECIFICATION forming part of Letters Patent No. 313,326, dated March 3,1885.

(X0 model.)

To ctZZ whom it may concern:

Be it known that I, O. \VnsLEY HARMAN', of the city of New York, incounty and State of New York, have invented a new and useful Improvementin VVatch-Oases, of which the following is a specification.

My invention has for its object a construction of watch-case whichcombines the advantages of neatness, strength, and dustproof qualitieswith great compactness in direction of thickness and important economyin manufacture. For this purpose I cause the move inent-ring to projectbeyond one edge of the case-center, and form on such projecting portionone or more screw-threads for attachment of as many caps, as hereinafterset forth.

In the accompanying drawings, Figure 1 is an axial section on line 1 lof a watch-case embodying my invention in its preferred form. Fig. 2 isa rear view of the same without the back. Figs. 3, 4, 5, and 6 showmodifications of my improved case.

A may represent an annular piece of metal, which combines the functionsof case-center and bezel or inner front cap. A rabbet, a, in the innerrear margin of annulus A receives flange b of movement-ring B, whichring is inserted at the rear opening of said annulus, and when thusinserted has a portion, 0, which projects rearwaid from the saidcasecenter, and has an exterior screw-thread, '0, for the correspondingscrew-thread, (Z, on the concave or inner periphery of the back I),which, when.

screwed home, seats upon the rear shoulder, a, of said case-center orannulus A.

For watches employing an inner back or inner rear cap, E, an additionalscrew-thread ed step, c, and shoulder 0 enable dust-proof attachment ofsuch inner back having a corresponding interior screw-thread, c, whichback, when driven home, seats upon said shoulder a". r

F are half-head screws, which enable retention of the movement-ringwithin the case. Circumferential shift of the movement-ringis preventedby one or more spurs, G, which 00- cupy corresponding notches, a, in thecasecenter.

The above-described preferred form of my improvement is susceptible ofvarious modifications. For example, the screw-thread for the rear capmay be formed on the inner margin of the lilOVBlHGlilJllilQ, as at c,Fig. 8, the cap-margin being exteriorly scrcwthreaded, as at c in saidfigure. Such movement-ring may be formed for application of a singleback without an inner back, as in Fig. 4'. Such movement-ring andattached back may be as sociated with a case-center having a separablefront or bezel, either with front cap, as in Fig. 5, to form ahunting-case, or with a bezel only for an open face.

The improvement may be used withcases whose pendant constitutes theusual projection from the case-center, or with cases in which thependant is a projection from the movement-ring and occupies a notch inthe case-center, as at J, Figs. 1 and 2. Finally, the movement-ring maybe combined with a case-center formed in one integral piece with theback, as in Fig. 6, its protruding screwthreaded portion being then infront, as at c, for dust-proof attachment of a correspondinglyscrew-threaded bezel, K, as in said figure.

I claim herein as new and of my invention- 1. In a watch-case in whichthe center and one of the caps are formed in one piece, the other capsecured to the movement-ring and seating upon the case-center,substantially as set forth.

2. In a watch-case in which the center and bezel are formed in onepiece, the back screwing onto the movement-ring and seating upon thecase-center, substantially as set forth.

In testimony of which invention I hereunto set my hand.

O. \VESLEY EAR-MAN. A t-te st JOHN A. PENN, GEO. H. KNIGHT.

